I'm out of step with the majority of mn on this, maybe cos I'm older?
My wedding was held in a central location (guests all over uk & even some from Europe, America and Australia), on a Saturday and children were very welcome. The advice in bridal magazines was expect for 1/3-1/4 of guests to decline - which we accounted for, except that's not what happened we had literally 2 decline and they were both health related! 1 was someone who initially accepted but had to rescind as their partner had a stroke in the run up to the wedding.
There's an idea now that weddings are ONLY about the couple getting married.
I was raised (as was my then fiancé, and my friends and relatives of similar age marrying around the same time) that it wasn't just about the couple, it was also the joining of 2 families and that the couple are HOSTS not deities!
As hosts you do what you can to ensure your guests have a good time, given they are making the time and effort and possibly spending a good amount of money - joining you to celebrate.
We even sourced/organised accommodation for those coming from a distance including a caravan site for a few who had motor homes and that suited them to come that way and stay in them.
The marriage didn't last yet the wedding still gets compliments over 20 years later!
You can't please everyone on everything but you try to please most people on most things.
If you don't want to be considerate of guests then have a very small immediate family only wedding or elope!
Re "why saturdays" I think this goes back to when most working people had weekends off but you couldn't in England and Wales get married on a Sunday due to it being the sabbath and at that point you could only marry in a registered place of worship or registry office, also because you could only marry between 8am and 6pm so late on a Friday was out too.
If you aren't considerate of guests needs you can't complain if they decline the invite.